[jawsscripts] Re: How JAWS handles the dictionary files?
- From: Soronel Haetir <soronel.haetir@xxxxxxxxx>
- To: jawsscripts@xxxxxxxxxxxxx, Doug Lee <doug.lee@xxxxxxxxxxxxxxxx>
- Date: Tue, 21 May 2013 08:13:05 -0800
Doug,
Something thing to note there are built-in limitations on the dictionary.
Each of the default and application dictionaries are limited to 2000
entries, cumulative between the user and shared files. (Meaning that
the default dictionary can have 2000 entries combined between the user
and shared files and so can the application dictionary). The
dictionary manager actually crashes if you try to exceed these limits.
Jaws does not crash but it also does not use any excess entries.
On 5/21/13, Doug Lee <doug.lee@xxxxxxxxxxxxxxxx> wrote:
> I imagine the file is loaded into memory, but this will not
> necessarily slow things down; it depends on how the data is searched.
> It would be instructive to create a huge dictionary, say via an
> automated process that renamed A<n> to Z<n> for arbitrarily large
> numbers of n values, to see if JAWS either slows down or starts
> consuming massive amounts of CPU time. I recommend a test document
> with no renamed values in it and another that is chocked full of them,
> for comparison. I've never tested this sort of thing.
>
> Here's a quick Python program to generate such a file. Usage:
> something like python gendict.py 5000 > notepad.jdf
>
> #! /usr/bin/env python
> # Save as gendict.py (or whatever you like)
> # Requires Python to be installed.
> import os, sys
> n = int(sys.argv[1])
> for i in range(0, n):
> print ".A%d.Z%d." % (i, i)
>
> On Tue, May 21, 2013 at 05:12:12PM +0200, Csaba Godo wrote:
> Hi everybody,
>
> Could somebody tell me it how JAWS handles the dictionary files? Iwould
> like to know if entries are loaded into the memory on startup or JAWS
> reads entries on the fly like Windows reads the ini file entries.
>
> I would like to extend the Hungarian default JAWS dictionary with over
> 5,000 entries but I don't want to slow down the machine with memory
> overloading. So I would like to know if JAWS reads these files only
> during text processing or the whole file is loaded into the memory and
> JAWS looks these in-memory-file up during the process?
>
> Thanks in advance,
>
> Csaba
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> SSB BART Group - Accessibility-on-Demand
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Soronel Haetir
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